Push Out JSON In Mvc 2?

I have a response object which I want to convert to Json, but somehow I can't, propably beacuse of I cannot the framework too well. I'm trying to convert a anonymous object to json but somehow it doesn't go so well. I would preferably do it in JSON than just make a text/plain result. In my controller: ViewData["json"] = new { Ok = false }; In my view: <%: ViewData["json"] %>

In my js-code (ajax-callback) I get back the following: { Ok = False } Which ain't what I am excepting. I want the { ok : false } or else js doesn't recognize the property in the object as a boolean. Or are there some better way to push out json-data? EDIT I did a method in my controller with a JsonResult instead of Actionresult.

var obj = new
{
Ok = false,
Message = ""
};
return Json(obj);

And that's the object I'm pushing out. And like this in js: {"Ok":true,"Message":""} C# 4.0 and Javascript goes along so well